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How do I compute the expected m/z for the +3 charge state of tirzepatide?

Asked 31 Oct 2024Modified 21 months agoViewed 20k times
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This is my second independent submission on material from the same supplier.

I would rather understand the derivation than memorise the outcome.

Two people I asked gave two answers that differ by a factor of ten, which is suggestive.

Can someone walk through the arithmetic step by step?

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askedseamus_brady17k2831 Oct 2024
8Any reason this would differ for a longer peptide? – kwn_analytical 9 months ago
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